Actor Bradley Cooper, seen here at the New York Stock Exchange on March 14, 2011, is best known for his relationship with actress Renee Zellweger (though the two have since split), but few people remember he was married once before - albeit very briefly.
Jennifer Esposito was married to Bradley Cooper for just four months. The pair married in December 2006, and she filed for divorce in May 2007.
In this photo, the "Blue Bloods" actress attends the Cinema Society screening of "Blue Valentine" on Dec. 13, 2010, in New York.
George Clooney, seen here with girlfriend Elisabetta Canalis, told CNN's Piers Morgan that his marriage to actress Talia Balsam, which ended in 1993, will be the only nuptials on his record. Many were surprised to remember that Clooney was once someone's husband.
Talia Balsam, George Clooney's ex-wife, attends the Our Time Theatre Company honoring of Howard Bingham on April 13, 2009, in New York. Balsam is now married to "Mad Men" actor John Slattery.
Keep clicking to see other little-known celebrity spouses.
Tom Cruise's courtship and marriage to Katie Holmes was all over the headlines - but before Holmes and ex-wife Nicole Kidman, he was married to another woman.
Actress Mimi Rogers was Tom Cruise's first wife. They were married from 1987 until 1990.
Julia Roberts is now happily married to cameraman Danny Moder, but the actress and mom-of-three has a first marriage in her past.
Singer Lyle Lovett was married to actress Julia Roberts from 1993 to 1995.
Jennifer Garner and husband Ben Affleck juggle acting careers and two daughters. But before they met, she was married to another former costar.
Actor Scott Foley and actress Jennifer Garner, who worked together on the TV series "Felicity," married in 2000 and divorced in 2003.
Kim Kardashian's romantic life routinely makes headlines, but many were surprised when the reality TV personality revealed she was once married.
Kim Kardashian was married to music producer Damon Thomas from 2000 to 2004.
Actor Tom Hanks and Rita Wilson have been married since 1988 and have two children, but the Oscar-winning actor also has another two children from a previous marriage - one of whom is also an actor.
Tom Hanks also has a son, actor Colin Hanks (seen here), and daughter Elizabeth Ann, from his marriage to actress Samantha Lewes. The pair were married from from 1978 to 1987.
Renee Zellweger, seen here at the Goldene Kamera awards in Berlin on Feb. 5, 2010, was dating actor Bradley Cooper. But before she and Cooper became an item, she was married to someone else - for only four months.
Country singer Kenny Chesney, seen here at the 45th Annual Academy of Country Music Awards on April 18, 2010, married actress Renee Zellweger in 2005. They had the union annulled just four months after they said "I do."
Will Smith and wife Jada Pinkett Smith juggle their careers alongside those of their two children, daughter Willow and son Jaden. But the actor also has another son, from his first marriage.
Will Smtih poses with son Trey Smith, from his marriage to Sheree Zampino. The two married in 1992 and divorced in 1995.
"Grey's Anatomy" actor Patrick Dempsey married Jillian Fink in 1999, and the couple have a daughter and twin sons. But it wasn't the first time Dempsey said "I do."
Patrick Dempsey's first marriage was to actress and acting coach Rocky Parker, who appeared with Dempsey in the film "In the Mood." The couple married in 1987 and divorced in 1994.
Bethenny Frankel's marriage to Jason Hoppy was the subject of a reality show, "Bethenny Getting Married?," which also followed the couple preparing for the birth of their first child. But before Jason and baby Bryn came into the picture, Frankel had been married once before.
Bethenny Frankel's first marriage was to friend Peter Sussman, in 1996. Frankel later said that she and Sussman were "best friends for five years and he always wanted to be more. I loved him because of how much he loved me. I got married too young. I didn't wait for the great love of my life."
Mariah Carey and husband Nick Cannon married in 2008 and are now expecting twins, due in spring 2011. But this wasn't Carey's first marriage.
Before marrying Nick Cannon, Mariah Carey tied the knot with legendary music executive Tommy Mottola. The pair married in 1993 and divorced in 1998.